M Series Amplifiers feature RCA inputs only. Run RCA cables from your
sound source to the inputs of the amplifier. We suggest the use of high quality
shielded RCA patch cords to help reduce or eliminate unwanted noise in
your installation. Be sure to run the RCA cables on the opposite side of the
vehicle that you used to carry the power leads to the amplifier.
The input stage of the M Series amplifiers incorporates Xtant’s Balanced
Line circuitry. This circuitry may be “enabled” or “disabled” via the
Balanced Input Mode Jumper located above the RCA input jacks. With the
Balanced Line circuitry “enabled”, the input sensitivity ranges from 100mV
to 17 Volts. When in the “disabled” mode, input sensitivity ranges from
100mV to 8 Volts. Input sensitivity is adjustable in 10 dB steps via the Input
Gain Select Jumper located above the Balanced Input Mode Jumper. Each of
the five jumper positions correlate to a specific range of input signal levels.
The chart below details the relationship between the jumper position and
input signal level.